Democrat U.S. Sen. Kamala Harris, who has been increasingly traveling to support Democrats across the nation, will make a stop in Iowa on Oct. 22, the Des Moines Register has confirmed.

The former California attorney general, who has made endorsements and fundraising appeals on behalf of Iowa Democratic candidates this year, will speak at a public event organized by Polk County Democrats. She endorsed Iowa secretary of state candidate Deidre DeJear over the summer, sent out an emails on behalf of auditor candidate Rob Sand and secretary of agriculture Tim Gannon in October.

Her stop in the first-in-the-national caucus state comes amid increasing speculation that she is eyeing a possible presidential run.